These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Genius Bonus: Jokes about Reverse Polish Notation and Hohmann Transfer Orbits.
Les Yay: Akane to Yukari, big time. At one point, Akane even says "if you're asking me to do that...I'll strip!" (Yukari asked Akane to go swimming, Akane didn't have her swimsuit handy, and she wasn't going to let that stop her.)